Check out this Russian pocket watch from the early 1900’s, made from solid wood.

Solid Wood Pocket Watch

Probably not very water resistant…

From the Watchismo Times:

Take a break from the complicated world of mechanical innovation for a few seconds… The orgy of Tourbillons, Forged Carbon, and Silicium Components can fade for a moment while you appreciate this early 1900 Russian pocket watch entirely made of wood. The case, the hands, and the gears, all from a tree – a living material that also marks time with it’s rings – natures own clock and a profound medium for a watch.

Pretty impressive!